I have a vizio soundbar SB36512-F6 that is 5.1.2 dolby atmos capable. this new TCL tv I just bought TCL Roku 65R635 will not recognize dolby signals on Amazon, Disney Plus or play anything in Netflix. All that comes through is no sound. When i'm in the menu I hear the clicking as i scroll through the apps so it sees it and I can play content on hulu which the sound bar says is not dolby. Occasionally depending on the app it will play a second or 2 of audio and then long segments of no sound or I get a high pitched wine coming from the speakers but nothing consistent. This bar worked on my old tv using a Roku ultra external device plugged in so I don't believe the issue is with the soundbar.I also have all the latest updates Software 11.0.0 build 4193-88
I've factory reset both the tv and the soundbar bought new hdmi cables and tried old ones with no luck. Anything special I'm missing here? appreciate the help.
Further Information I found. I can get the soundbar to work in a 5.1 by going to Settings Audio- Custom and selecting DTS on with Dolby Digital. It does not work with passthrough or Dolby Digital Plus so It seems it won't decode the Atmos or DTSX signals and send to the sound bar.